1. Introduction
Thank you for purchasing the APWIKOGER SI4732 Pocket Mini Radio. This compact and versatile radio receiver is designed for enthusiasts and casual listeners alike, offering a wide range of frequency reception including LSB, USB, AM, FM, HF, SW, MW, and VHF bands. Featuring an advanced ESP32-S3 chip, a vibrant 1.9-inch IPS HD color screen, and a durable 3D printed shell, this device provides a comprehensive and enjoyable listening experience. Please read this manual carefully to ensure proper use and maintenance of your radio.
2. Safety Information
- Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping or subjecting the radio to strong impacts.
- Keep the device away from water and other liquids.
- Use only the specified charging method (TYPE-C, no fast charging).
- Do not attempt to disassemble or modify the radio, as this will void the warranty and may cause damage.
- Dispose of the battery and device according to local regulations.
3. Package Contents
Please check the box for the following items:
- APWIKOGER SI4732 Pocket Mini Radio
- Ring Antenna
- USB Type-C Charging Cable (not for fast charging)
- User Manual (this document)
4. Product Overview
The SI4732 Pocket Mini Radio features a compact design with a 1.9-inch IPS screen for clear display of information. The device includes a built-in speaker and a 3.5mm audio interface for headphones. The included ring antenna connects via a standard connector for enhanced reception.
5. Setup
5.1 Initial Charging
- Connect the provided USB Type-C cable to the charging port on the radio.
- Connect the other end of the cable to a standard USB power adapter (not included).
- Allow the radio to charge fully before first use. The 800mAh built-in battery provides over 10 hours of continuous playtime on a single charge.
- Note: This device does not support fast charging.
5.2 Attaching the Ring Antenna
- Locate the antenna connector on the radio.
- Carefully screw the ring antenna onto the connector until it is secure. Do not overtighten.
- For optimal reception, position the ring antenna away from obstructions and electronic interference.
6. Operating Instructions
6.1 Power On/Off
- Press and hold the power button (location may vary, typically on the side or front) to turn the radio on or off.
6.2 Mode Selection
- Use the designated mode button or menu option on the screen to cycle through available modes: FM, AM, LSB, USB.
- The 1.9-inch IPS screen will display the current mode.
6.3 Tuning and Frequency Adjustment
- Use the tuning knob or navigation buttons to adjust the frequency.
- The screen will show the current frequency in real-time.
- For precise tuning in LSB/USB modes, utilize the BFO (Beat Frequency Oscillator) function if available, typically adjusted via a dedicated control or menu.
6.4 Volume Control
- Adjust the volume using the dedicated volume knob or buttons.
- The current volume level may be displayed on the screen.
6.5 Using Headphones
- Plug standard 3.5mm headphones into the audio jack for private listening. The built-in speaker will automatically mute.
7. Maintenance
7.1 Cleaning
- Wipe the radio with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or strong chemicals.
7.2 Storage
- Store the radio in a cool, dry place when not in use.
- Avoid storing in areas with extreme temperatures or high humidity.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not power on. | Low battery. | Charge the radio using the provided Type-C cable. |
| Poor reception or static. | Antenna not properly connected or positioned; environmental interference. | Ensure the ring antenna is securely attached. Adjust antenna position. Move away from electronic devices or large metal objects. |
| No sound from speaker/headphones. | Volume too low; headphones not fully plugged in; faulty headphones. | Increase volume. Ensure headphones are fully inserted. Test with different headphones. |
| Screen is blank or frozen. | Software glitch. | Perform a soft reset by holding the power button for 10-15 seconds until the device restarts. |
9. Specifications
| Feature | Detail |
|---|---|
| Main Control Chip | ESP-32-S3 |
| DSP Chip | SI4732 |
| Screen | 1.9-inch IPS HD Color Screen (170*320 resolution) |
| Frequency Range (FM) | 64MHz - 108MHz |
| Frequency Range (AM) | 520kHz - 1710kHz |
| Frequency Range (SW) | 2.3MHz - 26.1MHz |
| Frequency Range (LW) | 153kHz - 279kHz |
| Supported Modes | FM, AM, LSB, USB (Note: Does not support aviation band) |
| Power Supply | Rechargeable Battery Pack (800mAh built-in battery) |
| Charging Interface | TYPE-C (cannot use fast charging) |
| Audio Interface | 3.5mm three-band stereo |
| Body Material | Plastic (PETG 3D printed outer shell) |
| Product Dimensions (approx.) | 73mm x 32mm x 12mm (2.87in x 1.26in x 0.47in) |
| Function | Built-In Speaker |
| Battery Included | Yes |
Note: Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Please allow a 1-2cm difference in measurements due to manual measuring.
10. User Tips
- For best shortwave (SW) reception, try using the radio outdoors or near a window.
- Experiment with the orientation of the ring antenna to optimize signal strength for different frequencies.
- Keep the radio charged to avoid interruptions during long listening sessions.
- Consider using quality headphones for an enhanced audio experience, especially for LSB/USB modes.
11. Warranty and Support
This product comes with a standard manufacturer's warranty. For any technical support, warranty claims, or further inquiries, please contact the seller or refer to the official product page for contact information.
A detailed user manual in PDF format is also available for download: Download User Manual (PDF)